<template>
  <div class="count">
    <h2>当前求和为:{{ countStore.sum }}</h2>
    <select v-model.number='n'>
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
    </select>
    <button @click="add">加</button>
    <button @click="sub">减</button>
    <button @click="reset">重置</button>
  </div>
</template>

<script setup lang="ts" name="Count">

import {ref} from "vue";
import {useCountStore} from '@/store/count'

// 数据
let countStore = useCountStore();
let n = ref(1) // 用户选择的数字


// 方法

function add() {
  countStore.sum += n.value;
}

function sub() {
  countStore.sum -= n.value;
}

function reset() {
  countStore.sum = 1;
}

</script>

<style scoped>
.count {
  background-color: skyblue;
  padding: 10px;
  border-radius: 10px;
  box-shadow: 0 0 10px;
}

select, button {
  margin: 0 5px;
  height: 25px;
}
</style>